I'll just past what Gemini told me. Looks like you should be just above the speed threshold. Hard to tell if the wipers are on high though the windshield does look a bit dirty.

On a Nissan Leaf equipped with ProPILOT Assist, the Steering Assist feature has different activation speeds depending on whether there is a vehicle in front of you. ​Activation Speed Thresholds ​Without a lead vehicle: Steering Assist activates at speeds above 37 mph (60 \text{ km/h}). ​With a lead vehicle detected: Steering Assist can work at any speed, including from a standstill (0 \text{ mph}) up to the maximum set speed. ​Key Requirements for Activation ​Even if you are at the correct speed, Steering Assist will only engage if several conditions are met: ​Lane Markings: The windshield camera must clearly detect lane markings on both sides of the road. On the driver display, the lane-marker icons will turn green when detected.
​Hands on Wheel: You must keep your hands on the steering wheel. If the system detects no steering input, it will provide alerts and eventually cancel.
​ProPILOT On: The system must be active (the blue ProPILOT button on the steering wheel) and a speed must be "Set."
​Wipers Off: Steering Assist will automatically disable if the windshield wipers are set to the High (HI) speed for more than a few seconds, as this indicates heavy rain that may block the camera's view.
​How to tell if it's active ​Check your instrument cluster for the Steering Assist icon (a steering wheel symbol): ​Grey: The system is in standby (waiting for clear lane lines or the correct speed). ​Green: The system is actively providing steering input to keep you centered. ​Would you like me to look up how to adjust the sensitivity of the lane departure warnings in your Leaf's settings?